Sustainable Urban Street Comprising Permeable Pavement and Bioretention Facilities: A Practice

Yiqing Dai, Jiwang Jiang, Xingyu Gu, Yanjing Zhao and Fujian Ni
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Yiqing Dai: Department of Highway and Railway Engineering, Southeast University, Nanjing 210096, China
Jiwang Jiang: Department of Highway and Railway Engineering, Southeast University, Nanjing 210096, China
Xingyu Gu: Department of Highway and Railway Engineering, Southeast University, Nanjing 210096, China
Yanjing Zhao: Department of Highway and Railway Engineering, Southeast University, Nanjing 210096, China
Fujian Ni: Department of Highway and Railway Engineering, Southeast University, Nanjing 210096, China

Sustainability, 2020, vol. 12, issue 19, 1-14

Abstract: Roadside bioretention and permeable pavements have proven effectiveness in rainwater filtration and waterlogging mitigation, but conventional street design approach could not accommodate their work in conjunction. In this research, possible roadside facilities allowing water transmission from permeable pavements and bioretention to the pipe system are proposed. Hydraulic properties of the comprised elements were analyzed, including rainfall intensity, permeable pavements, soil layers and pipe systems. A transformation method was formulated to obtain a successive time-intensity formula from conventional design parameters to describe the rainfall behavior, and therefore the water retention capacity of the bioretention could be considered. A test section of 1.6 km combining permeable pavements and roadside bioretention was constructed, and its hydraulic performance was predicted based on the proposed design method and Storm Water Management Model (SWMM). The research results suggest that the bioretention facilities and permeable pavements cooperate well in the test section. In a light rain event, the proposed street has favorable performance in rainwater collection and filtration. In a relatively intense rainstorm event, the street collects and filters water in the initial stage, but will have similar hydraulic performance to a conventional street once the retention facilities are saturated. Thus, no reduction in diameters of drainage pipes from conventional designs is suggested in similar projects.

Keywords: permeable pavement; bioretention; simulation; rainwater; hydraulic performance (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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